# def foo(arg,qaz):
#     return "hello "+str(arg,qaz)
#
# result = foo("zhuliwei","li")
# print(result)
class Cat:

    def __init__(self,color):
        self.legs = 3
        self.color = color
    def Mew(self):
        print("mow~~")
# cat1=Cat()
# print(cat1.legs)
# print(cat1.color)
# cat1.Mew() 
cat1=Cat("back")
cat2=Cat("wlite")
print(cat1.color)
print(cat2.color)